re = /vat[\s.]*[rn]/m
str = 'vat registration no.
vat number:
our vat number
vat
VAT amount
VAT rate
seller vat.reg.no. FI25891989
vat rate'
# Print the match result
str.scan(re) do |match|
puts match.to_s
end
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html